Constant reloading of Microsoft 365?

I have been having issues with both Microsoft Excel and Microsoft Word. At random points it changes my fonts to those of the free version or trial version. I need to sign in once again to get the fonts that are specific to Office 365 reinstated. I appreciate the expansive services offered by 365, but would appreciate it if the system recognized I spent my hard-earned cash to get more options and stop feeling the need to refresh. Is this a problem shared by others, or could it be exclusive to my network?